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DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart,...
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The spindle assembly checkpoint is a molecular surveillance mechanism ensuring the fidelity of chromosome segregation during anaphase. The checkpoint monitors the completion of all the prerequisite steps before chromosome segregation to determine whether the segregation process should proceed or be delayed.
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对异步的拜占庭共识协议的审查

Zhenyan Ji1, Xiao Zhang2, Jianghao Hu2

  • 1School of Cyberspace Science and Technology, Beijing Jiaotong University, Beijing 100044, China.

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概括

区块链通过共识机制增强物联网数据隐私. 对数据完整性至关重要的异步拜占庭协议进行了探索,由DAG和ACS结构分类,确定了未来的研究方向.

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拜占庭式的故障耐受性异步网络模型模型区块链区块链区块链区块链区块链达成共识的协议协议.

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科学领域:

  • 计算机科学 计算机科学
  • 网络安全 网络安全
  • 分布式系统 分布式系统

背景情况:

  • 区块链技术为物联网 (IoT) 中的数据隐私提供了解决方案.
  • 在区块链系统中,共识机制对于数据的一致性和正确性至关重要.
  • 非同步的拜占庭共识协议提供了稳定性,没有网络定时假设,使他们成为研究重点.

研究的目的:

  • 在区块链中探索异步的拜占庭共识协议的原则.
  • 根据DAG和ACS结构对这些协议进行分类.
  • 分析它们的优点,缺点,并确定未来的研究方向.

主要方法:

  • 对异步的拜占庭共识协议进行现有研究的审查和总结.
  • 基于指向环形图 (DAG) 和异步通信系统 (ACS) 结构的协议的分类.
  • 对不同协议类别的优点和弱点进行比较分析.

主要成果:

  • 非同步的拜占庭共识协议分为基于DAG和基于ACS的类别.
  • 无论是DAG还是ACS结构,在达成共识方面都有明显的优点和缺点.
  • 该研究提供了对这些协议的当前情景的全面概述.

结论:

  • 非同步的拜占庭共识协议对于安全和强大的区块链应用程序至关重要,特别是在物联网中.
  • 了解DAG和ACS结构之间的权衡对于协议选择和设计至关重要.
  • 需要进一步的研究来优化这些协议以提高性能和安全性.